Home / 72,786.47-109,178.48-32,783.20

Finding the Fourth Proportional to 72,786.47, 109,178.48 and 32,783.20

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Solution

The fourth proportional to 72,786.47, 109,178.48 and 32,783.20 is: 49,174.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,786.47 : 109,178.48 = 32,783.20 : x
  2. Step 2: Convert to fraction form
    72,786.47/109,178.48 = 32,783.20/x
  3. Step 3: Cross multiply
    72,786.47x = 109,178.48 × 32,783.20
  4. Step 4: Simplify right side
    72,786.47x = 3,579,219,631.61
  5. Step 5: Solve for x
    x = 3,579,219,631.61/72,786.47
  6. Step 6: Final answer
    x = 49,174.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.